Skiving-machine



W. P. CROCKETT. SKIVING MACHINE. APPLICATION FILED NovA 2a. |916.

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SKIVING MACHINE.

APPLICATION FILED Nov. 28. I9I6.

1,349, 1 1 9, Patented Aug. 10, 1920.

6 SHEETS-SHEET 2.

WITNESS'. L* P cJ/VGENTOR ZZ w. m @y ATTORNEY W. P. CROCKETT.

SKIVNG MACHINE.

APPLICATION man Nov.z8. 1916.

Patented Aug. 10, 1920.

6 SHEET A INVENTOR WL'dz'aJn/ Croc/ite@ ATTORN EY w. P. caockm.

SKIVING MACHINE.

APPLICATION FILED NOV. 28. 1916.

Patented Aug. 10, 1920.

6 SHEETS-SHEET 4.

WITNESS'.

W. P. CROCKETT.

SKIVING MACHINE.

APPLICATION FILED Nov.2a. I9Ie.

I PatntedAug. 10, 1920.

6 SHEETS-SHEET 5.

w. P. CROCKETT.

SKIVING MACHINE. APPLICATION FILEDNOV. 28'1916.

Patented Aug. 1o, 1920. 1

EETS--SHEET 6.

iNvENToR Croc/Hei wrrN'ESs:

ATTORNEY UNITED STATES PATENT oEricE.

WILLIAM P. CROCKETT, Ol HARRISON, NEW JERSEY, ASSIG-NOR T0 THE SINGERMANUFACTURING COMPANY, A CORPEATION OF NEW JERSEY.

SKIVING-IAGHINE.

Specification or" Letters atent.

Patented Aug'. 10, 1920.

Applicatonled November 28, 1916. Serial No. 133,853.

To all rwhom it may concern.'

Be it known that I, WrLLmir P. Ciioonn'rr, a subject of the King of theUnited Kingdom of Great Britain and lreland, and resident of Harrison,in the county of Lisse); and State of New Jersey, have invented certainnew and useful Improvements in Shiving-l/iachines, of which thefollowing is a specification. reference being had therein to theaccompanying drawings.

The present invention relates to improvements in machines adapted forslriving the edges ot' and ioi' splitting leather and other materialscommon to the manufacture oi shoes, pocket-books, traveling bags, bool:-binding, &c., and has torfits object 'to providey improved means forelectine the operations common to the products oic such class oi"machines, and to this end the invention includes improved means forfeeding and for guiding the Work, ad moans, power transmitting, speed reand other improved features hereinafter fully described and set forth inthe ci In the accompanying drawings illustrating the invention, Figure lis a vieiv in front side elevation of a sliving machine equipped withthe present invention and Figs. 2, 3 and 4l are views in top plan, underside and' front end elevation, respective y, of Fig. l. Fig. 5 is anenlarged vie'v in perspective of the elements shown in Fig. mountedbelow the machine bed-plaie. Figs. 6 and 'T are sectional views on thelin B--B and 0*() respectivel f of F 8 lool;- ing in the directionindicated by the respective arrows.` Fig. S is a vienT in centralseotion on the line A- ot Fig. 2 illustrating the means for controllingthe adjustments of the sliviiig knife with respect to the ingmechanism-and for controlling' the tive action of the grinding oislr.Fig. 9 comprises views, in perspective, of the elements comprising thepresser-guide foot and the means for supporting the latter. l0 is a viewpartly inliull lines and partly in section of the cutter actuating shaftcarriage, together with 'the cutter actuating shaft shown in iull lines.Fig. il is a view., in perspective, or" a porton oi the driving anddriven lianges carried by the main-shaft and the' cutter actuating shaftrespectively. Fig. l2 is a view, in perspective, oi a section ofleather, side of which represents a scari'cd and the opposite(lenshousing S formed integral with the Atrame l, said shart passingloosely through a suitable op'ening (not shcfvn)` in said frame and atits opposite end journaled in a suitable bearing formed in the lug` 9depending` irom the bed-plate and provided with suitably secureo drivingsliai't'iiango l0 into Which is suitabl-r secured driving pins` as ll,said driving shaft flange and a capl l2., the latter suitablysecuredl'to said bearing` lug, acting to hold said main-shaft fromaccidental movement in the direction of its length, a belt pulley 13suitably secured upon said mainshaiit acting, through a suitableI belt(not shown), to connect said snatt With the source ci poiver throughsuitable treadle controlled ooiver transmitter (not shown), as is commonto the onerating ot manually controlled intermittently actuated machinesgenerally. l

l represents a cutter actuating shaft mounted in a carriage l5 providedwith slide-members, as 17, tracking the slide-Ways. as 1S, suitablysecured to the under side oi the bedplate, said carriage being providedwith integrally Aorined is i9 and 20, the latter provided with r strap2l through which loosely passes the l: 22 sari-oualiing the grindingdisl` driving shaft 23, the arm 19 being provided with a split strap 2dmade adjustable through a screw 25 to n .'ntai its desired slidingrelationshin with said sleeve. u L

rlhe cutter-actuating` shaft lli is ,iournaled at one end in a bushing2G and at its opposite end in a lilre bushing j, the latter held againstendwise movement by the jamnuts, as 28, threaded onto said shaft andseparated by a non-rotatable Washer 29, the bushing 26 being heldagainst endwise mover-nent bv the 30 suitably secured Vtegrally formedhub the opposite end of the shaft 14 having suitably secured upon it adriven shaft flange 31 provided with suitable openings, as 31 (one onlyof which is shown, see F ig. 11), into which are slidably mounted thedriving pins 11 controlled by springs, as 31 (one only of which isshown) to, at all times, maintain their driving contact with the wallsof said openings.

32 denotes a rotary cutter-head having an endless cutting edge38 andwhose base wall 34 is provided with a central opening which receives thehub 30 of the flange 30, said wall being secured to the latter by screwsas 35 (one only ofwhich is shown), thus transmitting from the main-shaft6 rotary movei ments to said cutter head. 36 denotes a cai'- Y erableportion of its length in the sleeve 22 v riage adjusting screw journaledat onef4 end in a suitable,bearingformed in the lug 37V forming a partof the frame 1, and 38 av carriage-bracket into which said screw 36 isthreaded and heldagainst endwise movement by the suitably secured collar39 and the hub of the spiral gear 40- fast on said shaft, said bracketbeing secured to the carriage by screws, as 41.

Y V42 denotes a hollow shaft mounted to turn Y in a suitable bearing inthe hub 43-formed integral with the frame 1 and onto said hollow shaftis suitably secured a hand-knob 44 and a spiral gear 45, the latter.meshing with a gear 40 carried by the screw 36, thus effecting, throughthe rotary'movements of the knob 44, rotary movements ofthe screw36'which, through its threaded connection with the bracket 38, moves thecarriage 15 and through the latter eects adjustments of the cutterrelatively to the feeding and 'guiding mechanisms.y

' The grinding-disk driving shaft 23 is journaled at one end in asuitable bearing 47 formedrin the frame 1 and for a considand carries atits fo'rward end a beveled gear 48 meshing with a like gear'member 49carried by a grinding-disk shaft 50, which later at its lower end isjournaled in a sintable bearing formed in the gear housing 51 i fast onthe sleeve 22, the upper end ofrsaid the grinding-disk 52. The shaft 23is held against endwise movement by a suitably secured collar 53 andgear member and the sleeve 22 against like movement by the suitablysecured collar 55 and gear member 48, a screw-cap '5G being provided forclosingthe threaded opening 57 in said housing. 58 denotes a gear drivenand gear drivingvshaft journaled in bearings, as 59, formed in the lugs,as 60, forming a part of a suitable bearing bracket (not shown) securedto the frame 1, said disk shaftV carrying shaft carrying at its upperend a gear meinber 61 meshing with a gear member 62, of greaterdiameter, carried by the main-shaft 6, the opposite end of the shaft 58having 'against endwise movement.

fast upon it a gear member 63 meshing with the gear member 54, thustransmitting from lthe main-shaft 6 rotary movements to thevnon-rotatable washer '75 acting'to separate the nut from the bottomwall 78 of the knob 44, thus effecting through the adjustment of the nut65 oscillatory movements of the sleeve 22`in opposition to theresiliency of the spring 77 to 'place the disk 52, through theconnections pointed out, into and out of grinding relationship withthecutting edge 33 of the cutter head 32.

78 represents a gear carrying yoke provided with arms 7 9 and 80arranged one at one side and the other at the opposite side of the gearmember 62 and drilled to receive the main-shaft 6 upon which said yokeis mounted to oscillate, and into said yoke is journaled a tubular wormgear 81 carrying a spiral gear 82 meshing with the gear 62, thustransmitting from the main-shaft 6 rotary movements to said worm-gear.83 denotes a .gear adjusting rod journaled in said tubular worm-gear andcarrying at one end a gear adjusting rod Vconnection 84 forked at itsfree end to embrace a gear shifting connection 85 slidably connected atone 'end with a stud 88 secured in the frame 1, and at its opposite endforked to embrace a'gear carrying sleeve 87 mounted to slide onand torotate with a feed-shaft 88', said gear'carrying sleeve having securedupon it the spiral gear members 89 and 90 and formed integral with itthe gear memberr91. 92'denotes a gear shifting crank fast on the outerend of the gear adjusting rod 83 and 93 a collar adjustably securedonthe feedv shaft and lacting to confine the amplitude of movement ofthe sleeve 87 between said collar and the frame 1 said gear shiftingcrank being provided with a springV plunger 94 having a knurled head975.

rlfhe'feed shaft 88, at its forward end, is journaled in a suitablebearing formed in a bracket y98 suitably secured to the frame 1 and atits opposite end in a suitable bearing formed in said frame, itsVforward end carrying a bevel gear97 which, together with the suitablysecured collar 98, holds said shaft l The gear 97 meshes with a likegear 99 fast on the lower lend of a vertically Aarranged tubular shaftmounted in a suitable bearing. formed in the lug' 101 "rigid withthe-frame 1, said tubular shaft being held against endwise movement bythe gear 99 and a suitable shoulder formed on the latter shaftibyreducing its diameter for the length of its bearing surface. 102 denotesa bearing block suitably secured to the frame 1 and provided with agroove or guide-way 103 into which is slidably mounted the tubular post104 held in sliding relationship with said groove by the suitablysecured cap 105 and limited in its upward movement by the collar 105threaded onto said post, which latter is provided with an integrallyformed bracket 106 in which is journaled a gear.- shaft 107 carrying abeveledy gear 108 meshing with a like gear 109 fast on a verticallymovable shalt 110, the lower end of the latter being provided with guideflanges, as 111, which track the grooves, as 112, in the tubular shaft100 to elfect a two.part telescopic rotary shaft, a spring 113 confinedbetween the wall 106 of the bracket 106 and theupper end of the shaft100 acting to hold said post and parts carried by it in their limit ofupward movement controlled by the threaded collar 105.

119 represents a feed-roller suitably secured on a shaft 120 j ournaledat one end in a bearing 121 and at its opposite end in a like bearing122 in the feed-frame 123, said shaft having suitably secured to it abeveled gear 124 meshing with a beveled gear oi less diameter, carriedby the shaft 107, thus transmitting from the main-shat 6, through theconnections pointed out, rotary movements to the feed-roller 119. 126denotes a hinge-bracket the 127 orn which is provided with a suitableopening through which passes the shaft 107, the arm 128 being suitablysecured to the feed-trame 123 and comprises the cap for the bearing 122.130 denotes a feed-adjusting frame comprising transversely arranged arms131 and 132, the latter suitably secured to a bracket 133 carried by thepost 104 and to the rear side of the arm 132 is suitably pivoted arock-lever 134, the end 135 ci which acts on a lug 136 of the bracket136, the latter secured by screws as 137 to the feed-frame 123, inopposition to the resiliency of the spring 138 made adjustable by thethumb-screw 139 passing through the step 140 of the arm 131 and threadedinto suitable suitably secured in the lower end of said spring, thelatter acting to resist the downward rocking movements of the feed-frameabout the axis of the shaft 107 influenced by the variations in thethickness of the materials being acted on and to hold the latter upagainst the presser-guide-ioot, later to be referred to. 141 den-'tes aiced-adjusting screw the reduced threaded portion of which passesthrough the opening 142 of the bracket 143 suitzbly securedito the arm132, and at its upper end threaded into the free end of the bracket-136-to adjustably limit the upward rocking movement 0'1": said feed-frame.

Frein. they foregoing it will be understood that the feed-roller and theelements for adjusting the latter are carried by the post 104, and thatthrough the adjustment of the. collar 105 said feed-roller and adjustingelements may be yieldingly secured in different selected positions andthrough the adj ustments-pointed out the axis ot the feed-roller may begiven adjustments oblique to a horizontal plane.

144 represents the presser-guide-oot provided with the concaved guidingsurface 144, 145 the vpresser-guide-foot bracket suitably secured to thelower end of the presserguide-foot bar, the latter comprising a section146 of greatest diameter, 147 of reduced diameter, threaded section 148and section 149 of smallest diameter, the section 147 receiving thebushing 150, 148 the knurled nut 151 and section 149 the bushing 152.The elements above referred to are shown in Fig. 1 assembled and mountedin the head 153 of the bracket-arm 4 and from an inspection of saidelements as shown in said tigure it will be readily understood thatthrough the manipulation of the nut 151 the presser-guidefoot barismoved toward or away from the material being acted on as the nature ofthe product may require. rl`he presser-guideoot is secured in thebracket by the plate 154 secured by suitable screws (not shown) threadedinto the openings, as 155, in said bracket in position to cause therollers, as 156, carried by said bracket, to track the groei/'eV 157formed in said presser-guide-toot, said groove comprising a segment of acircle whose axis is represented by the extreme heel portion 159 of saidpresser-guide-toot. To effect adjustments of the presser-guidefoot aboutits axis there is provided a pinion 160 which meshes with the gear teeth161 formed on the periphery of said presserguide-foot, said pinion beingmounted in a seat 162 in the bracket 145 and provided with a stem 163journaled in a bearing 164 and entering the opening 165 of the hollowstem 166 having the knurled head 167, said stems being secured to turntogether by a pin 168. To hold the presser-guide-t'oot againstaccidental movement about its axis 159 there is provided a bolt 169which passes through the opening 170 in the plate 154 with the head 171seated inthe said opening, through the slot 172 in the presser-guideoot,opening 173 in the bracket 145 and threaded into the crank-nut 174,which latter acts to secure said presser-guide-ioot or release it to theaction of said pinion as the circumstances may require.

175 represents an edge-gage adjustably tion to which the chute issecured by screws as 181 said partition being securedto the strap 2li byscrew 182 and suitably forked to straddie the knife-shaft 14, thussecuring it to partake of the adjustments of the carriage 15 and partscarried by the latter.

It is believed that applicant is the first to employ apresser-guide-foot suspended about the machine bed-plate capable ofoscillatory adjustments about an axis which latter, in

i practice, lies in substantially the same plane as the upper surface ofthe material, thus effecting oscillatory adjustments of said.presser-guide-foot to meet the requirements of different widths .ofscarf and without changing its position laterally withV respect Y to theapeX of the convex surface of the periphery of the feed-roller, whichgives to the present construction a wider range of application than canbe accomplished by any construction known to'applicant.l

When it is desired to give to the edge of the material a beveledsurface, as designated by 183, Fig. 12, the presser-guide-foot isVadjusted relatively to the feed-roll with its concave surfacesufficiently oblique `to the longitudinal aXis of said feed-roll toeffect the desired widthof scarf, the thickness of the free edge of thescarfed portion of the material being controlled by the verticaladjustments of said presser-guide-foot. The speed given the feed-roll isgoverned by the thickness and compactness of the material, and when itisv desired to change the feeding action the operator withdraws theplunger- 94E from engagement with one of the open? ings, as 18a, androcks the yoke 78 upwardly which moves the worin-gear 81 out ofengagementrwith the last driven spiral gear, and through the crank-armoscillates the rod 83 which, through the connections pointed out, bringsinto position for engagement by said werm-gear the spiral gear foreffecting the desired feed action, when the plunger is positioned in theopening for retaining the combination of gear-drive last effective. ltis to be' understood that the resilient control of the feed-roll allowsit to respond vertically and at an Yangle to the verticalv to meet'therequirement of unevenness andvariations in compactness of the material.

When' it is desired to split the material v back from its edge, asrepresented by 185, Fig. 12 the concave surface of the presserguide-footis adjusted parallel with-the convex surface of the feed-roll with theguiding edge 186 of the edge-guide substantially Acentral of the lengthof said concave surface,

as shown in dotted lines, Fig. l.

Having thus set forththe nature of the invention, what claim hereinis 1. A machine ofthe character described,

having in combination a main-shaft, a cut-` Vto the spiral gear selectedto best meet the feed requirements of the material being acted on,

2. A machine of the character described, having in combination amain-shaft, a cutter-head actuating shaft carrying a cutterhead andoperatively connected with-'said main-shaft, a feeding mechanismoperated from said main-shaft through connections including a feedactuating shaft carrying a multiple of spiral gears having slidingrelationship therewith and a worm gear operatively connected with saidmain-shaft and manually controlled to transmit power to the spiral gearselected to best meet the feed requirements of the material being actedon, and means 'for holding said worm gear in driving relationship withsaid selected spiral gear except at the will of the operator.

3. A machine of the character described, having in combinationaYmain-shaft, a cutter-head actuating shaft carrying a cutterhead andoperatively 'connected with said main-shaft, and a feeding mechanismoperated from said main-shaft through connections including a feedactuating shaft carrying a multiple of spiral gears having slidingrelationship therewith, anda worm gear journaled in a gear carrying yokehaving swinging movements about the aXis of said main-shaft, said wormgear being provided with a gear member meshing with the gear membercarried by said main-shaftthe worm gear and said multiple spiral gearsbeing manually controlled to transmit to said feeding mechanism the feedaction best calculated to-meet the feed requirements of the materialbeing acted on.

1. A machine of the character described, having in combination amain-shaft, a cutter-head actuating shaft carrying a cutterhead andoperatively connected with Said main-shaft, a feeding mechanism operatedfrom said main-*shaft through connections including a feed actuatingshaft carrying a multiple of spiral gears having sliding relationshiptherewith, and a Worm gear carried by a Swinging yoke and operativelyconnected with said main-shaft, and a gear adjusting rod carried by saidWorm-gear and connected, through a gear shifting connection, with thesleeve carrying said multiple gear members, said Worm gear and sleevebeing manually controlled to transmit to said feeding mechanism the feedaction best calculated to meet the requirements of the material beingacted on.

5. A machine of the character described, having in combination amain-shaft, a cutter-head actuating Shaft carrying a cutterhead andoperatively connected with said main-shaft, and a feeding mechanismoperated from said main-shaft through connections including a feedactuating shait carrying a multiple of spiral gears having slidingrelationship therewith, and a Worm gear journaled in a gear carryingyoke having swinging movements about the :axis of said main-shaft in agiven plane only, said Worm gear being provided with a gear membermeshing with a gear member carried by said main-shaft, the Worm gear andsaid multiple spiral gears being manually controlled to transmit to saidfeeding mechanisin the feed action best calculated to meet therequirements of the material being acted on.

6. ln a machine of the character described, the combination with amain-shaft and a cutter carrying shaft provided With a cutter, sai@Llatter shaft being driven from said main-shaft and adjustable in thedirection ot its length, of feed-roll actuated from said main-shaftthrough connections including a Worm gear operatively connected with thelatter and a feed actuating shaft upon which is slidably mounted asleeve prow'ded with multiple gear members, said Worm gear carrying amanually controlled gear adjusting rod acting, tirough a suitableconnection, on a silding connection to cause Said sleeve to bring intoengagement With said Worin gear the gear member selected to meet thefeed requirements of the Work.

ln testimony',\vl1ereof l have signed my name to this specification.

ILLIAM P. CROCKETT.

